BMW is unveiling a high-mileage Efficient Dynamics Edition 320d sedan at the Frankfurt Auto Show with a claimed fuel mileage of 57.36 mpg with CO2 emissions rating of 109 g/km.

Helping the 320d reach such figures are the fitted wheels and a lowered body, reducing the drag coefficient to 0.26. Parasitic losses are reduced by using electric rather than hydraulic power steering while regenerative braking helps store kinetic energy.

A 163hp turbocharged 2.0-liter four-cylinder diesel engine sends power through a six-speed manual transmission with a taller final drive ratio specific to the ED edition. The practicality of improved efficiency aside, the 320d ED edition goes from 0-62 mph in a reasonable 8.2 seconds.

And following BMW company policy, the 320d Efficient Dynamics Edition is priced the same as the regular BMW 320d.

We’ll have more about the BMW 320d Efficient Dynamics Edition tomorrow when it’s officially presented at the Frankfurt Auto Show.